.container {
      font-size: var(--base-font-size);
      max-width: 900px;
      margin: 40px auto;
      background: var(--bg-color);
      border-radius: 10px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.10);
      padding: 32px 24px 24px 24px;
    }
    h1 {
      text-align: center;
      color: #3b82f6;
      margin-bottom: 8px;
    }
    .subtitle {
      text-align: center;
      color: #64748b;
      margin-bottom: 24px;
    }
    label {
      font-weight: 600;
      margin-bottom: 4px;
      display: block;
    }
    select, input[type="number"], input[readonly], textarea {
      width: 100%;
      padding: 8px 10px;
      border-radius: 6px;
      border: 1px solid #cbd5e1;
      margin-bottom: 16px;
      font-size: 1rem;
      background: #f1f5f9;
      box-sizing: border-box;
    }
    input[readonly] {
      background: #e2e8f0;
      color: #334155;
      font-weight: bold;
    }
    .flex-row {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 16px;
    }
    .flex-col {
      flex: 1 1 120px;
      min-width: 120px;
    }
    .btn {
      background: var(--heading-color);
      color: #fff;
      padding: 10px 24px;
      border: none;
      border-radius: 6px;
      font-size: 1rem;
      font-weight: bold;
      cursor: pointer;
      transition: background 0.2s;
      margin-right: 12px;
    }
    .btn:last-child {
      margin-right: 0;
    }
    .btn:hover {
      background: #8d5418;
    }
    .results {
      margin-top: 24px;
      background: #f1f5f9;
      padding: 16px;
      border-radius: 8px;
    }
    .results h2 {
      margin-top: 0;
      color: #3b82f6;
      font-size: 1.2rem;
    }
    .ai-advice {
      margin-top: 32px;
      background: #f8fafc;
      border-radius: 8px;
      padding: 16px;
      border: 1px solid #e2e8f0;
    }
    .ai-advice textarea {
      margin-bottom: 8px;
    }
    @media (max-width: 600px) {
      .container { padding: 16px; }
      .flex-row { flex-direction: column; gap: 8px; }
    }